# West Nile virus found in San Diego mosquitoes, first detection in 2026

> **Open Intelligence Dossier** · First detected: 2026-07-04 02:07 UTC · Category: Health

## Executive Summary
5 news sources are covering this Health story right now — PULSE is tracking how fast it spreads.

## Intelligence Brief
"West Nile virus found in San Diego mosquitoes, first detection in 2026" is generating significant coverage in the Health category, with 5 articles from 5 distinct sources tracked by PULSE so far.


Outlets currently covering the story include 10News.com, San Diego County News Center, NBC 7 San Diego and fox5sandiego.com. PULSE measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.


This brief was generated by PULSE's extractive engine from coverage metadata only. The latest headlines from every source are listed below; the velocity chart shows how the story is developing in real time.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| 10News.com | West Nile virus found in mosquitoes in San Carlos area, county urges caution | [Source Link](https://news.google.com/rss/articles/CBMitAFBVV95cUxPY24wX3Fnc0QtUVRabXd5T0JuOUQ5bm5KbXlUXzdhSTZHamJlWkVXOE1oclotYmEzMHdTZ3RVVVVGUkZSb1hYUXhFejVneldGekp5SkFJR1lNbWc0QXNtZ29Oa3ZWLUVPcE9fZE13S2FJUFJUdjlmc0wxdVJ5cTFNWk5KX1JwTEJ3UDNUNzZnQXJRaGZBVXhHYVRmSHhkWTJpUnU4MnZ4a2dfY01Tc3k4ZGFUNUs?oc=5) |
| San Diego County News Center | Mosquitoes Near San Carlos Test Positive for West Nile Virus, County Urges Prevention | [Source Link](https://news.google.com/rss/articles/CBMiugFBVV95cUxOUDZmSkVwd09hXzZMdWttVWNiNUN4Ynh2b0NOYkZ5VEdlT3JjNnlHajZVbUtQWGFmYUNpUlpmaTBEMHBJT0Fldm9ES0dZZUJfcEU4OFRTa1hzYUtIUktTMHgwMW84UU5nUEJ3U1p2NE02UTQyb2Z4VDAtMEtfenk4N0VMTEdmeUVoZE1TSG1zUUZzRmplMmJGU2I2MGwyN1hyQnNOaEtNejJMZWNRWDRhZThZbVAwNWl0M2fSAb8BQVVfeXFMTnNVR0xydnNZZnhYTlBlV2VzbDNZUXhCNTZDVmUxY2o4dWVHSC1GbDk3WFhMWmpGS0FfSjlDREtoNmdhVUxXY25rZ09sSFNlbnBaeHE2WVBNUVR0MUdqdGc3SU9sUTNXc0V4c2JBN1lVSGdtS3FENmpIRzdFb3kzS3JhSy1sUlN1dDJCdmNNVkpER19KSjcyb3g) |
| NBC 7 San Diego | Caution: West Nile virus found in mosquitos in San Carlos area | [Source Link](https://news.google.com/rss/articles/CBMinwFBVV95cUxQTm5reEk2ZC1iZHNfZkJIWi02cS1iVDd6VmVqMEhRVGN1NDEyRm9RanNjaWRGa0EyUnNtMXZwRTE5a0JXWVJMZThhMDI3S0Z3UTgtaGFEWVZfYkVGSmNOY083Yjc4c1RwaWxPY0pJMTJtWEZiTU95UjZfQW9jQ3dwTlQ0RS12UFB1Qm5yZnZ0SkxWNnVNemRoSEhGa0RkSGPSAacBQVVfeXFMTzFkLUNrTzhfaVA4RDFzSFNkNDFCRXhUdF9OSVl4T2Jjbmw1b3ltS0RSLVlwekpVQWpGaTNxRTNodGtpbnpQODROZ2NGdEs4XzBwbDF0dFNkc0tDMmhCYUZpNDBXbGdEODVCVnAwUGM3cExlbFY1Qk95ZEh1Zi1XSlR2a0JpMHJOeHk1Zm9Hdl9iTTFpV0tQV2ZHYlo2ZVlkc3NtSE5wSHc?oc=5) |
| fox5sandiego.com | Mosquitoes near San Carlos test positive for West Nile virus: Here’s what to know | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxPTTlCb1JiaXVNemMzenJlSXAzSFg4Q1RDYWVCako5WGtDUUxDeDBEQ1BtMUpock9WelFpZE1TWlctWk13dGlkQXpzZExBUEtTTE5qejJsMHdyLU12bnotSGVqYUxZLVRHVHJIWmZMOEUtTHM1UV9FWF82NWwyMHdiS2pPWGFOajBzVXpLaF93NUI2eG_SAZgBQVVfeXFMT1FTeWRnMWYxX09PeDkyTXN4bUw1VWJMYXdJdjRCQmk5bXNYNGpXSWY4NGJwaDlSQVc3X2tYVEhRWk8yUDRfczJvODZucUtPV2dtZWtFTmtyVGplcTd0aUxycVpEai03QW9ZTGJHX3R1VjNXdEg3a2ZGMmtZckFadFZQRlZ6bmRveGQ4bEMyRmRzUDZ4WkpveW8?oc=5) |
| cbs8.com | West Nile virus found in San Diego mosquitoes, first detection in 2026 | [Source Link](https://news.google.com/rss/articles/CBMiuAFBVV95cUxOdElzb200c2p4ZmZ1TXlicXN3bnk3UFg1Q1ZuSDRwZy1JOHhfcFJLQ1FoNkpOcU50alk1ZnRXcUpydDRreVNFZHJWbHoyNFJPUnFFUzBuSXpLbWRIdVdVRXBGZi1xa2F2dDgxNnhCUDlYeEpoZ014UGFPaV82TUZYd01DWjVrMVlTOUZyRWk5VktQVm5lQVMxUDZUSjJiT09QWlNOdU16dkduWGNtYWNUcFVDN1Z0cmJz?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-04/west-nile-virus-found-in-san-diego-mosquitoes-first-detection-in-2026*